:root {
  color-scheme: light;
  --bg: #f7f9fc;
  --bg-elevated: #ffffff;
  --surface: rgba(255,255,255,.82);
  --surface-solid: #ffffff;
  --surface-soft: #f2f6fb;
  --surface-hover: #f8fafc;
  --text: #101828;
  --text-strong: #0b1220;
  --muted: #667085;
  --muted-strong: #475467;
  --line: #e4e9f0;
  --line-strong: #d6dde7;
  --primary: #1668e8;
  --primary-strong: #0d56c5;
  --primary-soft: #eaf2ff;
  --teal: #12a896;
  --success: #087f5b;
  --nav-bg: rgba(247,249,252,.84);
  --shadow: 0 24px 64px rgba(16,24,40,.09);
  --shadow-sm: 0 8px 28px rgba(16,24,40,.055);
  --shadow-xs: 0 2px 8px rgba(16,24,40,.045);
  --radius: 20px;
  --code: #101828;
  --code-text: #d9e7ff;
  --code-line: rgba(255,255,255,.09);
  --banner-bg: linear-gradient(135deg, #eef5ff 0%, #f8fbff 52%, #eaf8f6 100%);
  --banner-line: #dae7f7;
  --banner-glow: rgba(22,104,232,.14);
  --max: 1180px;
}
html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0b1018;
  --bg-elevated: #0f1622;
  --surface: rgba(17,25,39,.86);
  --surface-solid: #111927;
  --surface-soft: #151f2e;
  --surface-hover: #162131;
  --text: #eef4ff;
  --text-strong: #f8fbff;
  --muted: #9ba8ba;
  --muted-strong: #bdc8d7;
  --line: #243044;
  --line-strong: #334158;
  --primary: #6ea8ff;
  --primary-strong: #8bb9ff;
  --primary-soft: rgba(61,128,225,.16);
  --teal: #4fd1c5;
  --success: #5bd6ad;
  --nav-bg: rgba(11,16,24,.82);
  --shadow: 0 26px 80px rgba(0,0,0,.32);
  --shadow-sm: 0 10px 34px rgba(0,0,0,.22);
  --shadow-xs: 0 2px 10px rgba(0,0,0,.18);
  --code: #070b12;
  --code-text: #d7e6ff;
  --code-line: rgba(255,255,255,.10);
  --banner-bg: linear-gradient(135deg, #111a29 0%, #132238 52%, #103044 100%);
  --banner-line: #263b54;
  --banner-glow: rgba(74,148,255,.18);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 12% -8%, rgba(22,104,232,.10), transparent 30rem),
    radial-gradient(circle at 92% 2%, rgba(18,168,150,.075), transparent 25rem),
    var(--bg);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  transition: background-color .2s ease, color .2s ease;
}
a { color: inherit; text-decoration: none; }
button, select { font: inherit; }
img { max-width: 100%; display: block; }
.container { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }

/* Navigation */
.nav-wrap {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  background: var(--nav-bg);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 85%, transparent);
}
.nav { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
.brand { display: inline-flex; align-items: center; gap: 10px; flex: 0 0 auto; font-size: 18px; font-weight: 790; letter-spacing: -.025em; color: var(--text-strong); }
.brand img { width: 34px; height: 34px; object-fit: contain; }
.nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 4px; min-width: 0; }
.nav-links > a { min-height: 38px; display: inline-flex; align-items: center; gap: 7px; padding: 0 11px; border-radius: 10px; color: var(--muted-strong); font-size: 14px; font-weight: 650; white-space: nowrap; transition: background .15s ease, color .15s ease, transform .15s ease; }
.nav-links > a:hover, .nav-links > a.active { background: var(--surface-solid); color: var(--text); box-shadow: var(--shadow-xs); }
.nav-links .nav-github svg { width: 17px; height: 17px; fill: currentColor; }
.nav-links .nav-primary { min-height: 40px; margin-left: 4px; padding-inline: 16px; background: var(--text-strong); color: var(--bg-elevated); border: 1px solid var(--text-strong); box-shadow: 0 8px 22px rgba(16,24,40,.14); }
html[data-theme="dark"] .nav-links .nav-primary { background: #f1f5fb; border-color: #f1f5fb; color: #0d1521; }
.nav-links .nav-primary:hover { transform: translateY(-1px); background: var(--primary); border-color: var(--primary); color: #fff; box-shadow: 0 10px 24px rgba(22,104,232,.22); }
.theme-toggle { border: 0; padding: 0; margin: 0 3px; width: 58px; height: 34px; border-radius: 999px; background: transparent; cursor: pointer; flex: 0 0 auto; }
.theme-track { position: relative; width: 58px; height: 34px; display: block; border: 1px solid var(--line-strong); border-radius: 999px; background: var(--surface-soft); box-shadow: inset 0 1px 2px rgba(16,24,40,.04); }
.theme-track svg { position: absolute; top: 9px; width: 15px; height: 15px; fill: none; stroke: var(--muted); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.theme-sun { left: 8px; }
.theme-moon { right: 8px; }
.theme-thumb { position: absolute; top: 4px; left: 4px; width: 24px; height: 24px; border-radius: 50%; background: var(--surface-solid); box-shadow: 0 2px 8px rgba(16,24,40,.18); transition: transform .22s ease; }
html[data-theme="dark"] .theme-thumb { transform: translateX(24px); }
html[data-theme="dark"] .theme-moon { stroke: var(--primary); }
:root:not([data-theme="dark"]) .theme-sun { stroke: #f59e0b; }

.release-link { width: fit-content; max-width: min(92vw, 820px); margin: 16px auto -2px; display: inline-flex; align-items: center; justify-content: center; gap: 9px; padding: 7px 11px; border: 1px solid var(--line); border-radius: 999px; background: var(--surface); color: var(--muted-strong); font-size: 12px; font-weight: 650; box-shadow: var(--shadow-xs); }
.release-link span { padding: 3px 7px; border-radius: 999px; background: var(--primary-soft); color: var(--primary); font-weight: 800; }
.release-link b { color: var(--primary); font-weight: 760; }
.release-link:hover { border-color: var(--line-strong); color: var(--text); }

/* Hero */
.hero { padding: 92px 0 66px; text-align: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; padding: 7px 12px; border: 1px solid var(--line); border-radius: 999px; background: var(--surface); color: var(--muted-strong); font-size: 13px; font-weight: 680; box-shadow: var(--shadow-xs); }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 5px color-mix(in srgb, var(--teal) 13%, transparent); }
h1 { margin: 24px auto 18px; max-width: 900px; font-size: clamp(44px, 7vw, 78px); line-height: 1.03; letter-spacing: -.058em; font-weight: 830; }
.gradient-text { background: linear-gradient(102deg, var(--text-strong) 12%, var(--primary) 58%, var(--teal)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p { max-width: 760px; margin: 0 auto; font-size: clamp(17px,2.2vw,20px); line-height: 1.75; color: var(--muted); }
.hero-actions { margin-top: 30px; display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; }
.btn { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 0 18px; border: 1px solid var(--line-strong); border-radius: 11px; background: var(--surface-solid); color: var(--text); font-weight: 730; font-size: 14px; box-shadow: var(--shadow-xs); transition: transform .15s ease, border-color .15s ease, background .15s ease; }
.btn.primary { background: var(--text-strong); border-color: var(--text-strong); color: var(--bg-elevated); box-shadow: 0 10px 26px rgba(16,24,40,.16); }
html[data-theme="dark"] .btn.primary { background: #f1f5fb; border-color: #f1f5fb; color: #0d1521; }
.btn:hover { transform: translateY(-1px); border-color: var(--primary); }
.primitives { max-width: 900px; margin: 48px auto 0; display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; }
.primitive { text-align: left; background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 18px 19px; box-shadow: var(--shadow-sm); }
.primitive code { color: var(--primary); font-weight: 790; font-size: 14px; }
.primitive span { display: block; margin-top: 7px; color: var(--muted); font-size: 13px; line-height: 1.58; }

/* Sections */
.section { padding: 72px 0; }
.section-tight { padding-top: 30px; }
.section-head { max-width: 740px; margin-bottom: 32px; }
.kicker { color: var(--primary); font-size: 12px; font-weight: 820; letter-spacing: .105em; text-transform: uppercase; }
h2 { margin: 10px 0 12px; font-size: clamp(30px,4vw,44px); line-height: 1.1; letter-spacing: -.038em; color: var(--text-strong); }
.section-head p { margin: 0; color: var(--muted); font-size: 16px; line-height: 1.8; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow-sm); transition: .18s ease; }
.card:hover { border-color: var(--line-strong); box-shadow: var(--shadow); transform: translateY(-2px); }
.icon-box { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 12px; background: var(--primary-soft); color: var(--primary); font-weight: 850; font-size: 17px; }
.card h3 { margin: 18px 0 8px; font-size: 19px; letter-spacing: -.02em; color: var(--text-strong); }
.card p { margin: 0; color: var(--muted); line-height: 1.7; font-size: 14px; }
.card .endpoint { display: inline-block; margin-top: 16px; padding: 6px 9px; border-radius: 8px; background: var(--surface-soft); color: var(--muted-strong); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; }
.usecases { display: grid; grid-template-columns: repeat(4,1fr); gap: 12px; }
.usecase { min-height: 142px; padding: 20px; border: 1px solid var(--line); background: var(--surface-solid); border-radius: 17px; box-shadow: var(--shadow-xs); }
.usecase b { display: block; margin-bottom: 8px; font-size: 15px; color: var(--text-strong); }
.usecase span { color: var(--muted); font-size: 13px; line-height: 1.62; }

/* Homepage feature banners: lighter in light mode, deep but readable in dark mode */
.banner { position: relative; overflow: hidden; padding: 40px; background: var(--banner-bg); border: 1px solid var(--banner-line); border-radius: 26px; color: var(--text); box-shadow: var(--shadow-sm); }
.banner:after { content:""; position:absolute; width:320px; height:320px; border-radius:50%; right:-95px; top:-150px; background: var(--banner-glow); filter: blur(6px); }
.banner-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.02fr .98fr; gap: 34px; align-items: center; }
.banner h2 { margin-top: 8px; max-width: 560px; color: var(--text-strong); }
.banner p { margin: 0; color: var(--muted-strong); line-height: 1.78; font-size: 15px; }
.banner p strong, .banner code { color: var(--text-strong); }
.banner .hero-actions { justify-content: flex-start !important; margin-top: 22px !important; }
.banner .btn { background: var(--surface-solid); color: var(--text); border-color: var(--line-strong); }
.banner .btn:hover { border-color: var(--primary); color: var(--primary); }
.skill-banner { background: linear-gradient(135deg, color-mix(in srgb, var(--primary-soft) 72%, var(--surface-solid)), var(--surface-solid) 54%, color-mix(in srgb, #e9fbf7 78%, var(--surface-solid))); }
html[data-theme="dark"] .skill-banner { background: linear-gradient(135deg, #111a29, #152236 54%, #10332f); }
.codebox { position: relative; background: var(--code); border: 1px solid var(--code-line); border-radius: 15px; padding: 20px; overflow: auto; box-shadow: inset 0 1px 0 rgba(255,255,255,.035), 0 12px 32px rgba(6,10,18,.12); }
.codebox pre { margin: 0; color: var(--code-text); font: 13px/1.72 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace; white-space: pre-wrap; word-break: break-word; }
.copy-btn { position: absolute; right: 10px; top: 10px; border: 1px solid rgba(255,255,255,.13); background: rgba(255,255,255,.075); color: #d4deec; border-radius: 8px; padding: 5px 9px; font-size: 11px; cursor: pointer; z-index: 2; }
.copy-btn:hover { background: rgba(255,255,255,.13); }
.copy-btn.is-success { border-color: rgba(96, 211, 148, .55); background: rgba(54, 179, 126, .18); color: #c9f7dd; }
.copy-btn.is-error { border-color: rgba(255, 120, 120, .55); background: rgba(220, 72, 72, .18); color: #ffd0d0; }
.provider-row { display: flex; flex-wrap: wrap; gap: 10px; }
.pill { padding: 9px 13px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface-solid); color: var(--muted-strong); font-size: 13px; font-weight: 680; box-shadow: var(--shadow-xs); }
.pipeline { display: flex; align-items: stretch; gap: 10px; overflow-x: auto; padding-bottom: 3px; }
.pipeline .step { min-width: 170px; flex: 1; padding: 18px; border: 1px solid var(--line); border-radius: 16px; background: var(--surface-solid); box-shadow: var(--shadow-xs); }
.pipeline .arrow { display: grid; place-items: center; color: var(--muted); font-size: 18px; }
.pipeline small { color: var(--primary); font-weight: 800; }
.pipeline b { display: block; margin: 6px 0; color: var(--text-strong); }
.pipeline span { color: var(--muted); font-size: 12px; line-height: 1.5; }
.table-wrap { overflow: auto; border: 1px solid var(--line); border-radius: 17px; background: var(--surface-solid); box-shadow: var(--shadow-xs); }
table { width: 100%; border-collapse: collapse; min-width: 720px; }
th,td { padding: 15px 17px; text-align: left; border-bottom: 1px solid var(--line); font-size: 13px; }
th { background: var(--surface-soft); color: var(--muted-strong); font-weight: 760; }
td { color: var(--muted-strong); } td strong { color: var(--text); }
tr:last-child td { border-bottom: 0; }
.status { color: var(--success); font-weight: 760; }
.community-strip { display:flex; align-items:center; justify-content:space-between; gap:36px; padding: 34px 38px; border: 1px solid var(--line); border-radius: 22px; background: var(--surface); box-shadow: var(--shadow-sm); }
.community-strip h2 { margin: 8px 0 10px; font-size: clamp(28px,3vw,38px); }
.community-strip p { max-width:720px; margin:0; color:var(--muted); line-height:1.75; }
.community-actions { display:flex; gap:10px; flex:0 0 auto; }
.footer { padding: 44px 0 56px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.footer-inner { display:flex; align-items:center; justify-content:space-between; gap:20px; }
.footer .brand { color: var(--text); }
.footer-link { color: var(--primary); font-weight: 680; }

/* Docs */
.docs-body { background: var(--bg-elevated); }
.docs-layout { width: min(calc(100% - 40px), 1280px); margin: 0 auto; display: grid; grid-template-columns: 236px minmax(0, 840px); gap: 58px; padding: 46px 0 96px; justify-content: center; }
.docs-sidebar { position: sticky; top: 100px; align-self: start; }
.docs-sidebar .label { margin: 0 0 9px 12px; font-size: 11px; color: var(--muted); font-weight: 820; text-transform: uppercase; letter-spacing: .1em; }
.docs-sidebar > a, .sidebar-project > a { display: block; padding: 10px 12px; border-radius: 10px; color: var(--muted); font-size: 14px; font-weight: 640; margin-bottom: 4px; }
.docs-sidebar a:hover { background: var(--surface-soft); color: var(--text); }
.docs-sidebar a.active { background: var(--primary-soft); color: var(--primary); }
.sidebar-project { margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--line); }
.sidebar-project .sidebar-github { color: var(--text); }
.docs-main { min-width: 0; }
.docs-main .doc-eyebrow { color: var(--primary); font-size: 13px; font-weight: 770; }
.docs-main h1 { margin: 8px 0 16px; max-width: none; font-size: clamp(36px,5vw,54px); text-align: left; letter-spacing: -.047em; color: var(--text-strong); }
.docs-main .lead { color: var(--muted); font-size: 17px; line-height: 1.8; margin-bottom: 38px; }
.docs-main h2 { margin-top: 48px; padding-top: 10px; font-size: 28px; letter-spacing: -.027em; }
.docs-main h3 { margin-top: 30px; font-size: 19px; color: var(--text-strong); }
.docs-main p,.docs-main li { color: var(--muted-strong); line-height: 1.82; font-size: 15px; }
.docs-main ul,.docs-main ol { padding-left: 22px; }
.docs-main a:not(.btn):not(.text-link) { color: var(--primary); }
.docs-main code:not(pre code) { background: var(--surface-soft); padding: 2px 6px; border-radius: 6px; color: var(--text); font-size: .92em; }
.docs-main .codebox { margin: 16px 0 22px; }
.docs-main .note { border-left: 3px solid var(--primary); background: var(--primary-soft); padding: 14px 16px; border-radius: 0 12px 12px 0; color: var(--muted-strong); margin: 20px 0; }
.docs-main .endpoint-block { border: 1px solid var(--line); background: var(--surface-solid); border-radius: 18px; padding: 22px; margin: 22px 0 34px; box-shadow: var(--shadow-xs); }
.method.get { background: var(--success); }
.method { display: inline-block; font-size: 11px; font-weight: 850; color: #fff; background: #1668e8; border-radius: 7px; padding: 5px 8px; margin-right: 8px; vertical-align: 2px; }
.param-table { margin: 14px 0 24px; }
.doc-next { margin-top: 54px; border-top: 1px solid var(--line); padding-top: 24px; display:flex; justify-content:flex-end; }
.doc-next a { color: var(--primary); font-weight: 720; }
.mobile-docs { display:none; margin: 16px 0 0; }
.mobile-docs select { width:100%; padding: 11px 12px; color:var(--text); border:1px solid var(--line); border-radius:10px; background:var(--surface-solid); }


/* Changelog */
.changelog-main .lead strong { color: var(--text); }
.release-hero { margin-top: 24px; padding: 30px; border: 1px solid var(--banner-line); border-radius: 24px; background: var(--banner-bg); box-shadow: var(--shadow-sm); overflow: hidden; position: relative; }
.release-hero::after { content:""; position:absolute; width:240px; height:240px; right:-90px; top:-110px; border-radius:50%; background:var(--banner-glow); filter:blur(2px); pointer-events:none; }
.release-hero-top,.release-entry-head { position:relative; z-index:1; display:flex; align-items:center; justify-content:space-between; gap:18px; color:var(--muted); font-size:13px; }
.release-version { display:inline-flex; align-items:center; padding:6px 10px; border-radius:9px; background:var(--text-strong); color:var(--bg-elevated); font-weight:850; letter-spacing:-.015em; }
html[data-theme="dark"] .release-version { background:#f1f5fb; color:#0d1521; }
.release-version.secondary { background:var(--surface-soft); color:var(--text); border:1px solid var(--line); }
.release-latest,.release-baseline { margin-left:8px; padding:5px 8px; border-radius:999px; background:var(--primary-soft); color:var(--primary); font-size:11px; font-weight:820; text-transform:uppercase; letter-spacing:.05em; }
.release-baseline { background:var(--surface-soft); color:var(--muted-strong); border:1px solid var(--line); }
.release-hero h2 { position:relative; z-index:1; margin:22px 0 10px; padding:0; max-width:720px; font-size:34px; }
.release-hero p { position:relative; z-index:1; max-width:760px; margin:0; color:var(--muted-strong); }
.release-metrics { position:relative; z-index:1; display:grid; grid-template-columns:repeat(4,1fr); gap:10px; margin-top:26px; }
.release-metrics div { padding:14px; border:1px solid color-mix(in srgb,var(--banner-line) 82%,transparent); border-radius:14px; background:color-mix(in srgb,var(--surface-solid) 72%,transparent); }
.release-metrics b { display:block; color:var(--text-strong); font-size:23px; letter-spacing:-.03em; }
.release-metrics span { display:block; margin-top:3px; color:var(--muted); font-size:11px; line-height:1.45; }
.release-highlights { display:grid; grid-template-columns:repeat(2,1fr); gap:14px; margin:18px 0 34px; }
.release-highlights article { padding:20px; border:1px solid var(--line); border-radius:16px; background:var(--surface-solid); box-shadow:var(--shadow-xs); }
.release-highlights article > span { color:var(--primary); font-size:11px; font-weight:820; text-transform:uppercase; letter-spacing:.08em; }
.release-highlights h3 { margin:8px 0 6px; font-size:17px; }
.release-highlights p { margin:0; font-size:14px; line-height:1.7; }
.release-section { margin-top:34px; padding-top:8px; }
.release-section h2 { margin-top:0; font-size:25px; }
.release-section ul { margin-bottom:0; }
.release-section li + li { margin-top:7px; }
.release-security { padding:24px; border:1px solid var(--line); border-radius:18px; background:var(--surface-solid); box-shadow:var(--shadow-xs); }
.release-entry { margin-top:60px; padding-top:38px; border-top:1px solid var(--line); }
.release-entry h2 { margin-top:18px; padding-top:0; }
.release-columns { display:grid; grid-template-columns:repeat(3,1fr); gap:12px; margin-top:20px; }
.release-columns > div { padding:18px; border:1px solid var(--line); border-radius:15px; background:var(--surface-solid); }
.release-columns h3 { margin:0 0 6px; font-size:16px; }
.release-columns p { margin:0; font-size:13px; line-height:1.7; }
.release-source { margin-top:42px; padding:22px; display:flex; align-items:center; justify-content:space-between; gap:20px; border:1px solid var(--line); border-radius:17px; background:var(--surface-solid); }
.release-source strong,.release-source span { display:block; }
.release-source span { margin-top:5px; color:var(--muted); font-size:13px; }

/* Docs community */
.docs-community { margin-top: 58px; padding-top: 12px; }
.community-grid { display:grid; grid-template-columns: 1fr 1.2fr; gap: 16px; margin-top: 20px; }
.community-card { min-height: 180px; display:flex; align-items:flex-start; gap:18px; padding:22px; border:1px solid var(--line); border-radius:18px; background:var(--surface-solid); box-shadow:var(--shadow-xs); }
.community-card h3 { margin: 2px 0 7px; }
.community-card p { margin:0 0 12px; font-size:14px; line-height:1.7; }
.community-icon { width:48px; height:48px; flex:0 0 auto; display:grid; place-items:center; border-radius:14px; background:var(--text-strong); color:var(--bg-elevated); font-size:13px; font-weight:850; letter-spacing:-.02em; }
html[data-theme="dark"] .community-icon { background:#f1f5fb; color:#0d1521; }
.text-link { color:var(--primary); font-weight:720; font-size:14px; word-break:break-all; }
.qr-card { align-items:center; }
.qr-card img { width: 150px; height: 150px; flex:0 0 auto; object-fit:contain; padding:6px; border-radius:12px; background:#fff; border:1px solid #edf0f4; }
.qr-note { display:block; color:var(--muted); font-size:12px; line-height:1.5; }
.community-grid.compact .community-card { min-height: 160px; }
.community-grid.compact .qr-card img { width: 132px; height:132px; }

@media (max-width: 1080px) {
  .nav-section-link { display:none !important; }
  .nav-links { gap: 2px; }
  .docs-layout { grid-template-columns: 220px minmax(0, 820px); gap: 38px; }
}
@media (max-width: 900px) {
  .release-metrics { grid-template-columns: repeat(2,1fr); }
  .release-columns { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .usecases { grid-template-columns: repeat(2,1fr); }
  .banner-grid { grid-template-columns: 1fr; }
  .primitives { grid-template-columns: 1fr; max-width: 560px; }
  .community-strip { align-items:flex-start; flex-direction:column; }
  .community-actions { flex-wrap:wrap; }
  .docs-layout { display:block; padding-top:24px; }
  .docs-sidebar { display:none; }
  .mobile-docs { display:block; }
}
@media (max-width: 720px) {
  .nav-github span { display:none; }
  .nav-links > a { padding-inline:9px; }
  .community-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .release-highlights { grid-template-columns: 1fr; }
  .release-hero { padding: 22px; border-radius: 19px; }
  .release-hero h2 { font-size: 28px; }
  .release-source { align-items:flex-start; flex-direction:column; }
  .release-link { border-radius:14px; flex-wrap:wrap; }
  .container { width: min(calc(100% - 28px), var(--max)); }
  .nav { min-height:64px; gap:10px; }
  .brand span { display:none; }
  .brand img { width:32px; height:32px; }
  .nav-links > a:not(.nav-primary):not(.docs-only):not(.nav-github):not(.nav-changelog) { display:none; }
  .docs-only { display:none !important; }
  .nav-github { display:none !important; }
  .theme-toggle { width:52px; }
  .theme-track { width:52px; }
  html[data-theme="dark"] .theme-thumb { transform: translateX(18px); }
  .nav-links .nav-primary { margin-left:0; padding-inline:12px; }
  .hero { padding: 62px 0 48px; }
  h1 { font-size: 44px; }
  .section { padding: 54px 0; }
  .usecases { grid-template-columns: 1fr; }
  .banner { padding: 24px; border-radius: 20px; }
  .footer-inner { align-items:flex-start; flex-direction:column; }
  .docs-layout { width:min(calc(100% - 28px),1280px); }
  .community-card { flex-direction:column; }
  .qr-card { align-items:flex-start; }
  .qr-card img { width: 180px; height:180px; }
}

/* QR preview */
.qr-preview-button {
  position: relative;
  display: block;
  flex: 0 0 auto;
  padding: 0;
  border: 0;
  border-radius: 14px;
  background: transparent;
  color: inherit;
  cursor: zoom-in;
}
.qr-card .qr-preview-button img {
  display: block;
  width: 150px;
  height: 150px;
  object-fit: contain;
  padding: 6px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid #edf0f4;
  transition: transform .18s ease, box-shadow .18s ease;
}
.qr-preview-button:hover img,
.qr-preview-button:focus-visible img {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(15,23,42,.14);
}
.qr-preview-button:focus-visible { outline: 3px solid var(--primary-soft); outline-offset: 4px; }
.qr-preview-button > span {
  position: absolute;
  left: 50%;
  bottom: 10px;
  transform: translateX(-50%);
  padding: 4px 8px;
  border-radius: 999px;
  color: #fff;
  background: rgba(15,23,42,.72);
  backdrop-filter: blur(8px);
  font-size: 11px;
  font-weight: 700;
  white-space: nowrap;
  opacity: 0;
  transition: opacity .18s ease;
  pointer-events: none;
}
.qr-preview-button:hover > span,
.qr-preview-button:focus-visible > span { opacity: 1; }
.community-grid.compact .qr-card .qr-preview-button img { width: 132px; height: 132px; }

.qr-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(7, 13, 24, .68);
  backdrop-filter: blur(8px);
  opacity: 0;
  visibility: hidden;
  transition: opacity .18s ease, visibility .18s ease;
}
.qr-modal.is-open { opacity: 1; visibility: visible; }
.qr-modal-panel {
  position: relative;
  width: min(92vw, 520px);
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--surface-solid);
  box-shadow: 0 30px 90px rgba(0,0,0,.28);
  transform: translateY(10px) scale(.98);
  transition: transform .18s ease;
  text-align: center;
}
.qr-modal.is-open .qr-modal-panel { transform: translateY(0) scale(1); }
.qr-modal-image {
  display: block;
  width: min(72vw, 390px);
  height: min(72vw, 390px);
  margin: 8px auto 16px;
  padding: 10px;
  object-fit: contain;
  border-radius: 18px;
  background: #fff;
  border: 1px solid #edf0f4;
}
.qr-modal-title { margin: 0 0 6px; color: var(--text-strong); font-size: 20px; font-weight: 800; }
.qr-modal-tip { margin: 0; color: var(--muted); font-size: 13px; }
.qr-modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--surface-soft);
  color: var(--text);
  cursor: pointer;
  font-size: 22px;
  line-height: 1;
}
.qr-modal-close:hover { background: var(--surface-hover); }
body.qr-modal-open { overflow: hidden; }

@media (max-width: 640px) {
  .qr-card .qr-preview-button img { width: 180px; height: 180px; }
  .community-grid.compact .qr-card .qr-preview-button img { width: 180px; height: 180px; }
  .qr-modal-panel { padding: 22px 16px 20px; border-radius: 20px; }
  .qr-modal-image { width: min(78vw, 360px); height: min(78vw, 360px); }
}

/* Docs: core design & provider channels */
.docs-concept,.docs-channels { scroll-margin-top: 92px; }
.docs-concept h2,.docs-channels h2 { margin-top: 8px; }
.design-flow { display:grid; grid-template-columns:1fr auto 1fr auto 1.2fr auto 1fr; align-items:stretch; gap:9px; margin:20px 0 14px; }
.design-flow > div { min-width:0; padding:16px 14px; border:1px solid var(--line); border-radius:14px; background:var(--surface-solid); box-shadow:var(--shadow-xs); }
.design-flow b,.design-flow span { display:block; }
.design-flow b { color:var(--text-strong); font-size:13px; }
.design-flow span { margin-top:5px; color:var(--muted); font-size:11px; line-height:1.5; }
.design-flow i { align-self:center; color:var(--primary); font-style:normal; font-weight:850; }
.design-principles { display:grid; grid-template-columns:repeat(2,1fr); gap:12px; margin-top:14px; }
.design-principles article { padding:17px; border:1px solid var(--line); border-radius:14px; background:var(--surface-solid); }
.design-principles b,.design-principles span { display:block; }
.design-principles b { color:var(--text-strong); font-size:14px; }
.design-principles span { margin-top:6px; color:var(--muted-strong); font-size:13px; line-height:1.65; }
.docs-channels { margin-top:52px; }
.docs-provider-table { margin-top:18px; }
.docs-provider-table table { min-width:760px; }
.docs-provider-table th:first-child,.docs-provider-table td:first-child { width:126px; white-space:nowrap; }
.provider-badges { display:flex; flex-wrap:wrap; gap:8px; margin-top:16px; }
.provider-badges span { padding:7px 10px; border:1px solid var(--line); border-radius:999px; background:var(--surface-solid); color:var(--muted-strong); font-size:12px; font-weight:680; }
@media (max-width: 780px) {
  .design-flow { grid-template-columns:1fr; }
  .design-flow i { justify-self:center; transform:rotate(90deg); }
  .design-principles { grid-template-columns:1fr; }
}